def setUp(self):

        self.hub = HubSystemCostAdder()

        self.hub.hub_cost = 20000.0
        self.hub.pitch_system_cost = 20000.0
        self.hub.spinner_cost = 20000.0
    def test1(self):

        hub = HubSystemCostAdder()

        hub.hub_cost = 20000.0
        hub.pitch_system_cost = 20000.0
        hub.spinner_cost = 20000.0

        check_gradient_unit_test(self, hub)